A study analyzed the average yearly salt intake in the United States from 2012 thru 2017. The data is summarized in the table:

Year Annual Salt Intake
(grams)
2012 3,554
2013 3,598
2014 3,603
2015 3,655
2016 3,718
2017 3,794

The study found that the data after the year 2012 can be modeled by the function f(x) = 52.3x + 3,548, where x is the number of years since 2012 and f(x) is the total amount of salt ingested in grams. Describe the significance of 3,548.

3,548 would be the first mean calculated between the two as added together is 36322 and divided by 2 to find 6053.68 = fx  To find 6054 we deduct 3,648 and find 2506 and can divide this by 52.2= 47.9 = 48  Can only consider that 3,500 is the comparing figure to 48 as the true mean is 3,548 and x can reduce to 48. x therfore is a 10 unit significance to 3,500-3599 and 100 unit to 1000-3000 and 4000-5000 etc. 1000 unit to all other means 0001-3000. Anything higher than 3,999 becomes a 1000 unit relevance to x and anything under 3,000 becomes a thousand unit relevance to x

Step-by-step explanation:

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40